jackson



R. M. JACKSON.

I REMOVABLE CYLINDER LINER APPLICATION FILED AUG.I2.I9I8.

ii fiwd L YQQ m Talented Nov. 11, 1919.

Ill/VE/VTOR W ll??? d IREMUVABLE CYLIN'JDEIKFLINER.

reenter.

Specification of Letters Patent.

atented Nov. ii, rare.

Application filed August 12, isle. serial No. stat-55m.

To all whom it may concern:

Be it known that I, RALPH M. JAonsoN,

a citizen of the United States, residing at My invention relates to linings, form ing the guiding surfaces for pistons in cylwill) hit inders, and more specifically to linings in the cylinders of internal combustlon en'- gines.

One object of this-invention s to prov de a liner; easily removable; slidingly fitting within the cylinder so as to allow a removing of the liner when necessary; having no.

press-fit as 'is usually provided with that kind of liners, making it hard to remove such liners after bein a while in such pressfit position; still, being of such construction as to be firmly held in position when installed.

Another object is to prevent an overheating of such liner or the cylinder provided with such liner.

Another object is to provide proper conducting means between the cylinder and the liner to transmit the cooling of the cylinder from its water jacket to the'llner.

-Another object is to provide sultable means which allow the removing of the liner, still holding the liner firmly when in operating position.

Other ob ects will appear from the following description and appended claims as well as from the accompanying drawlng, in which-- v Figure 1 is a vertical or longitudmal section through a cylinder of an internal combustion engine with my device 1n proper position.

Fig. 2 is a perspective side elevation of the liner. 0

Fig. 3 is a slight modification of the means for holding the liner in position, being a fragmentary detail view similar to the section in Fig. 1.

Similar numbers refer to similar parts throughout the several views.

In Fig. 1, 4L designates a cylinder of an trated as provided with a removable head 8,

secured to the upper end of the cylinder by the bolts 9, but it will easily be understood from the description later oritwith reference to Fig. 3, that my liner is not limited to such constructions with removable heads. The cylinder l in Fig. 1 is bored out from the upper open end 10 downwardly to a suitable point near the lower orinner end of the cylinder, as indicated at 11, leaving a shoulder 12 of the original inner'bearing surface of the cylinder for the liner 13 to rest on with its inner end 14. The cylinder head 8, when bolted and tightened by the bolts 9 to the upper-open end 16 of the cylinder, settles at the same time on the upper free end 15 of the liner, ther by holding the liner rigidly within the cylinder. The liner is made to easily slide into the bore of the cylinder without press-fit, still having bearing enough within the bore eliminating unnecessary play, which would cause a knocking of the liner within the bore of the cylinder.

Wi'h a liner of the character described there is (even though slight), sufficient air space ,in the joint between the liner and the cylinder chamber to have an insulating effect, retarding the flow of heat to the cooling system. This objection can be overcome by keeping this space filled with a suitable temperature conducting means and for this purpose I prefer to provide the liner with circulating passages for permittlng the passage of oil or other adaptable temperature conducting means, and for facilitating the equal distribution thereof in the joint.

The liner 14 is therefore provided with a suitable number of circumferential grooves 17, and a suitable number of longitudinal grooves 18, forming the oil-circulating passages between the cylinder and the liner when the liner is inserted into the bore of the cylinder. Such passages are provided with a suitable number of holes or overflowing passages 19 through the wall of the liner. In the drawing, these holes 19 are shown near the upper end of the liner rather close below the lowest ring 20 of the piston 21 when such piston is in its uppermost position, but it will easily be understood that holes or overflowing passages of this kind may be provided at any other suitable place, as indicated at 22 for one instant, other points, of course, not excepted.

In Fig. 3 is a slight modification of the means for holding the liner in proper position. In F ig. 1, it was supposed that the liner would be used in cylinders provided with removable heads, in which case it would naturally be preferable to insert and remove the liner from the upper open end 10 of the cylinder, after the removable head 8 has been removed, allowing the elimination of more or extra parts. In Fig. 3, it is now taken into consideration that the liner can also be used in cylinders which are not provided with removable heads, in which case the liners naturally have to be removed from the lower open end of the cylinders. In such a' case, the cylinder is bored out from the lower 7 end 11 upwardly and the liner 13 is inserted from the lower end into the bore of the cylinder 4. A ring or flange 23 is provided to hold the liner in its operating position, being secured to the cylinder 4 by the bolts 24, as will easily be understood.

Having thus described my invention, I claim:

1. In a cylinder having a suitable bore, a liner comprising a plain cylindrical body fitting into the bore of the cylinder tightly engaged endwise, and temperature-equalizing means disposed between the cylinder and the liner.-

'2. In a cylinder having a suitable bore and locking means removably disposed at the open end of the bore, a liner comprising a plain cylindrical body fitting into the bore of the cylinder adapted to be held tightly endwise in its proper position within the bore of the cylinder by the said means at the open end of the bore, and temperature-equalizing means disposed between the cylinder and the liner.

3. Ina cylinder having a suitable bore and locking means removably disposed at the open end of the bore, a liner comprising a' plain cylindrical body fitting into the bore of the cylinder adapted to be held in its proper position within the bore of the cylinder by the said locking means at the open end of the bore, the outer surface of the cylindrical body being provided with grooves forming circulating passages between the liner and the cylinder when the liner is in its proper position within the bore of the cylinder.

4. In a cylinder, a' liner having grooves provided in the outer surface of the liner so as to form circulating passages between the liner and the cylinder when the liner is disposed within the cylinder.

5. In a cylinder, a liner having grooves provided in the outer surface of the liner so as to form circulating passages between the liner and the cylinder when the liner is disposed .within the cylinder, and other passages provided in the liner from the inner surface to the outer surface of the liner so as to allow a circulation from the inside of the liner through the liner communicating with the first-named passages.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

RALPH M. JACKSON.

Witnesses:

Orro H. KRUEGER, M. W. OLDs. 

